8790 HMA Deep 1/4", socket, 4 x 50 mmLong hand and machine socket (ISO 2725 part 3) with ball intercept ring, for external hexagonal bolts and sockets. For use in manual and machine operation (non-impact), even with low-lying screwdriving and protruding threaded rods. With Take it easy tool finder with colour coding by size - for easy and fast location